Lock for freight-car doors.



L. WADSWORTH.

LOGK FDR FREIGHT UAR DOORS.

APPLIOATION FILED PE B. 1,1909.

Patented Aug. 31, 1909.

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, WiTSlEEEEE! -L. WADSWORI'H. LOCK FOR FREIGHT GAR DOORS. "APPLICATION nun ri;.1,1soe.

Patented Aug. 31, 1909.

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LOCK FOR FREIGHT CAR DOORS.

APPLICATION FILED FEB.1,1909.

Patented Aug. 31; 1909.

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LELAND W nswoR'rH, or TROY, nnw ronk.

LOCK FOR FREIGHT-GAR DOORS.

Specification ofLetters Patent. P tented Aug. 31, 1909.

Application filed February 1, 1909. Serial No. 475,344.

To all whom itmay concern:

Be it known that I, LELAND WADSWORTH, a

citizen of the United States, residing at Troy, county of Rensselaer, and State of New York, have invented certain new and useful Improvements in Looks for Freight- Gar Doors, of which the following is a specification. i

The invention relates to such improvements and consists of the novel construction and combination of parts hereinafter described and subsequently claimed.

Reference may be had to the accompanying drawings, and the reference characters marked thereon which form a part of tlllS specification. imilar. characters refer to similar parts in the several figures therein.

The general object of the invention is to utilize the air-pressure, employed in connection with an air-brake system, for locking the doors of freight-oars. i

Specifically, some of the objects are to lock and maintain in a locked position by means of air-pressure, accessible interlockable members so long as the car provided with such members is connected by air-pipes with the train-locomotive, and when any car is cut off from such connection to maintain such members in a locked position by means of certain mechanism which can, when desired, be so operated by hand eXteriorly of the car before the car is so disconnected from the locomotive as to permit thelocked members to be unlocked when the air-pressure is cut off from such car; another specific object is to provide means whereby the interlockable members may be locked by the hand of the operator when the air-supply is cut oil from the car in such manner that such members cannot be unlocked except by airpressure when the car is again connected with the locomotive.

The invention consists of exteriorly located and accessible interlockable members, one of which members .is provided with mechanism adapted to be operated by an airengine connected with the compressed-air pipe of the brake-system to lock-such members, and means for retaining such mechanism in the locking position after the airsupply is cut oil; also inproviding means for prearranging the locking mechanism while the air-engine is energized, so that when the air-supply is cut oli, the interlocked members may be unlocked; also in providing certain attachments whereby the inter-lockable members may be interlocked by the hand of the operator when the airpressure is cut ofi, as will be hereinafter more. fully described and subsequently pointed out in the claims.

Figure 1 of the drawings is a view in side elevation-of a part of a freight-car, showing a door locked by the improved locking mechanism, a portion. of the side of the car being broken away to show the inaccessible portions of the mechanism located interiorly of thecar-wall, and occupying the locking position. Fig.2 is an interior elevation of that side-wall of the car shown in Fig. l, with the door partly open, and with the locking mechanism occupying the unlocked position. Fig. 8'is a vertical cross-section of a portion of the car showing portions of the locking mechanism in elevation,

viewed in the direction of the arrow, A, in

Fig. 1. Fig. 4 is a similar view, viewed in the direction of the arrow, B, in Fig. 1.

The car, 1, is shown provided with a slidedoor, 2, supported bywheels, 3, adapted to travel on track, 4, in the usual well known manner. The bottom of the door is held against the car-body by means of keepers 5.

The door is provided with a hasp, 6, secured in the usual manner to the door, as bythe bracket, 7, having the ring, 8, inserted in aperture, 9, in one end of the hasp, so that the hasp is free to swing in any direction upon the ring. I The hasp constitutes one of the interlockable members. The other interlockable member consists of the flattened head, 12, provided with a cylindrical shank or stem, 13, rotatory in suitable bearings located in the car-wall, and the post, 14, secured thereto.

The head, 12, is adapted to be inserted in the slot, 10,' when the head occupies a po sition corresponding with the slot, as indi cated by dotted lines in Fig. 2. After the hasp has been placed upon the head, and the head rotated through 90 degrees to the position shown by solid lines in Figs. 1 and 3, the two interlockable members are locked together.

The head may be provided with the slot, 16, adapted to receive a padlock, which may,

when desired, be inserted and sealed in the.

.by dotted lines in Fig. 2. This rock-lever is loosely and pivotally connected with the link, 22, by means of the pivot, 28, movable longitudinally of the slot, 24, on the link,

thereby maintaining what is temned aloose- The link, 22, is. pivotally connected at its lower end by means vof pivot, 26, with the upper projecting end of piston-rod, 27 reciprocatory in the airconnection with the link.

cylinder, 28, and provided with a piston, 29, indicated by dotted lines within the air-cylinder. The air-cylinder is provided with an 'i'nl'et-ip'ipe, 30, connected with the air-supply pipe, 31', forming part of the airbrake sys tem, and communicating with the -*a-ir-.pump on the tra i'n locomotive. The upper end of the link, 22, is provided with the weight, 33,

and the steps, 84, '35 and '32.

When air is admitted from the air-supply pipe, 3 1,'to the cylinder, 28,0f theair-engine,

the piston, 29, is forced to the upper'en'dof the cylinder, and the rock-lever, 20, and

' link, 22, to =the-positions indicated by dotted 1 lines in Fig. 1, and maintained insuch 1P0- sitions'so long as the air-pressure continues,

"which imparts to the interlock'able member a rotatory movement, which positions the head, 12, crosswise*of the hasp-lock, l0, and

locks the interloekable 'members together.

l/Vhen the air-supply is cut off from the air-engine,rthe weighted link, 22, and the rock-lever *descendto the positions shown by solid lines :in- Fig. =1. The-ro'ck-lever; isQdeit'ained at the position-shown by solid, lines by means of 'a'detent which will be hereinafter more fully explained, andthe weighted link-continues its descent after the rock-lever Y has "been stopped 'untilthe stop, '34, on the linkengag'es with the-stop, 36,011 the rocklever, and holds the lever in engagement with the 'detent. The inclined stop, 82, riding "upon the inclined stationary stop, 87, iforces the s'top,34, into engagement with the "stop, 36, and'the-sto'p, 35,-onthe link en- 3gages the upper side I of the lever-to prevent 1 receive the pin, 45, fixed in the upperend-o'f the lever, 47, oscillatoryvupon the 'pivot, 48, fixed in therpr 'oj'ectiny 'end of bracket, 49, secured 'to the "wall 'oi -the car. The lever, 47, is provided with" theconvexsurface, 50, adaptedtobeengaged bytheoscillatory end of the *roek-lever, 20, when the sameipasses toantl *iiroitrom the locking position shown I in Fig. 1 to the un'lockingi position sh own 'in Fig. 2, and back again. Thelever, 40, is slotted, and within the slot rests an oscilla- *tory lever 52. This lever is provided with a flange, 58, on one side to prevent the lever from escaping from the slot in the lever, 40, and with the flange, 54, on the other side to prevent the lever from escaping from the slot in the opposite direction. The oscillatory end of the-flange, 54, is provided with the stop, 56, ada'pted'to engage with the stop,

57, on 'the rock-.leverto hold the parts in the position shown by solid 111168111 Fig. 1. The outer snrface oi flange, 54, -1s-curved or convex to permit the oscillatory-end ot the rocks lever to ride along the same and force the lever, 52, from ithe position shown in Fig. 1 to the position shown in Fig. 2, and fall back again by gravity to the position-shown in Fig. -1, when the rock-lever has passed beyond the stop 56.

it should be observed that when the parts are in the position shown in Fig. 1, thedetent cannot be moved fllOlllltllGPOSltlOH there *shown by means ot-the projecting handle, 42,

but when the rock-lever and the link, .22, occupythe positionshown by dotted lines in Fig. 1,-=the stops, 56and 57, are not in engagemeneand the detentcan be changed by 'the hand of the 'operator applied to the handle, 42, from the position shown in Fi 1 to the position shown in Fig. 2, whici throwsrthe detentand its stop, 56, outof the path of the rock-lever, so that when the airsupply is cut oil from the air-engine the rock-lever can be moved to the position shownin Fig. 2 by applying the hand of the operator to the flattened head of the interlockable member, 12, in case it does not fall by gravity to such position, thereby unlockmg the interlockable members. Such movement of the rock-lever to the position shown in Fig. 2, causes the head of such lever to en- ;gage the curved surface, 50, of the lever,

47 and impartto the latter lever suflicient -movement to restore the detent to the position shown in Fig. 1.

As a means for 111t61l00k111g' the interlockable members by hand when the parts are in the position shown in Fig. 2, the link, 22, is provided with a stop, 60,,pivoted at, 61, and the rock-lever is provided with the link-stop, 62, pivoted-upon thepivot, 23. The operator thengrasps the flattened head of the interlockable member, 12, and turns the same toward the interlocking position, which forces the rock-lever from the position shown in Fig.2, upward to, and a little beyond,'the position shown by solid lines in Fig. 1. The stop, 60, engagingwith the-stop, 62, forces the link, 22, up toward the position shown 'by' dotted lines in-Fig. 1.

WVhen the oscillatory endof therock-lever passes the stop,-56, of the detent, such stop fallsby gravityto the position-shown inFig. 1, and: a-slight additional upwardmov'emen t 3, and the stop, 34, on-the link engaging with stop, 86, on the rock-lever, as before described, thereby securely interlocking the in terlockable members and preventing them from being unlockedexcept by the admission-of com pressed air'- to the air-engine, and thereby raising; the link and oscillatory end of-the rock-lever with their locking stops, to the position shown bydottedlines in Fig. 1,

which permits the detent to be thrown" out of the path oftherock-lever by means of the handle, 42, as before described, when the partscanbe unlocked by cuttingiofl? the air supply;

WhatI claim as new and'desire to secure by Letters Patent is L In a lock for doors of freight-'carsipros vided withan air-brake system; the combination with interlockable members accessible to'ma-nual operation; of inaccessible-locking mechanism adaptedto be operated by com' pressedair forcommunicatingito one of theinterlockable members a, locking movement,

and for maintaining,- while subjected to airpressure, such members in locked position;

a detent for-'maintainingthe interlocking:

membersin locked position when the airpressure is cut ofi'; and connections between i the locking. mechanism and the air-supply pipe forming part of the car-brake system.

2.In alock oftheclass described,the: combination with interlockable" members; of locking mechanism adapted to be operated by compressed airfor communicating-ate one or the interlockable members alocking: movement, and for maintaining, while sub jected to air pressure, such members in locked position; a detent for maii i-taining the-interlockable-members in locked position when the air-pressure is cut off hand-oper-' ated mechanism, accessible from the exterior of the car, for removing the detent while the members are maintained in their'locked position by the air-actuated locking mechanism, whereby the interlocking members can be unlocked from the exterior of the car when the air-pressure is cut oil.

3. In a lock of the class described, the combination with the interlockable members; of locking mechanism adapted to be when so lockedby hand, in locked position while the air-pressure is cut 011' from the 'bi'nation with interlockablemembers accessisubjected to air-pressure, such members in lockedkpositio'n; means for operating such locking mechanism by hand when theairpressure is'cut ofl' and an automatic detent for maintaining the interlocking members,

air-operated locking mechanism.

4. Inaloc k-of the class described, the combination with interlockable members ac- CQSSlblB exteriorlyofthe-icar; or inaccessible locking mechanism adapted to be actuated bycompressed air to communicate a locking movement to one of i such interlockable 1nembers; a movable detent engageable by theairactuated locking mechanism and automatically locatedin the path traversed by such mechanism; whereby an unlocking movement of the air-actuated locking mechanism is prevented when the supply ofcomp'ressed air is cutoff; means located exteriorly of the car, and accessible to 'manual operation, for removing such detent-from the path'ot the airactuatedmechanism while such mechanism is'maintained at'the limit'of its air-actuated movement; whereby the interlockingmembers may be unlocked when the compressed air is'cut off.

In a locker the class described, the combleexteriorly of the car, one of such members being provided with a stem rotatively mounted in suitable bearings; of inaccessible locking mechanism adapted to be actuated lay-compressed air, comprising a rock-lever fixed upon, and projecting from, such stein; an air-enginehaving a piston-rod pivotally connected at its outerend with a link, which linlcisloosely and pivotally connected with the rockdever intermediately ofitscnds; an oscillatory detent m-o'vable into and out of thepath oftherock-lever'; means for auto-' maticallyoscillating the detent, whereby the rock-lever is retained by-thcdetent in-a position' tomaintainthe interlockingmembers in 1 la-locking:position when the air-supply has been cut olffrom the air engi ne.

6. In'aloc'k-oftheclass described, thec0mbination with interlockable members accessi- =ble exteriorly of-the car, one of such membersbeing providedwith astem' rotatively moun tedin suitable bearings; of a rock-lever upom-and projecting from, such stem; inaccessible locking mechanism comprising an air-engine having a reciprocatory pistonred,- a lin lnpi'votally connected at one end with the piston-rod, a loose pivotal con-nection between the link and rock-lever intermediately of their ends, respectively; a stop on the upper oscillatory end of the link adapted to engage with a coacting-stop on the oscillatory end of the rock-lever; an oscillatory detent normally located in the path of the rock-lever, and adapted to engage the oscillatory end of the lever and maintain the same in a locking position when the compressed-air supply is cut oil"; means for bringing the stop on the oscillatoryend of the link into engagement with the stop on the oscillatory end of the rock-lever when the air-supply is cut ofi,'thereby preventing the rock-lever from being oscillated by means of the exteriorly projecting portion of the interlockable member upon whichlthe lever is fixed.

7 In a lock of the class described, the combination with interlockable members accessible exteriorly of the car, one of such mem bers being provided with a stem rotatively mounted in suitable bearings; of a rocklever fixed upon, and projecting from, such stem provided on its oscillatory end with locking stops; an air-engine having a reciprocatory projecting piston-rod a link pivotally connected at one end with the projecting end of the piston-rod; a loose pivotal connection between the link and rock-lever inlever is oscillated to change the interlockable termediately of their ends, respectively, whereby, when the air-engine is energized by the admission of compressed air, the rockmembers from an unlocked to a locked position, and when the compressed air is cut off from the engine, the, rock-lever oscillates toward, and engages with, the detent, and

the piston-rod and link drop'by gravity until the stop on the link engages with the stop on the oscillatory end of the rock-lever and locks the link, rock-lever and detent, each in an immovably fixed position until the airengine is again energized.

8. In a lock of the class described, the combination with interlockable members accessible exteriorly of the car, one of such members being provided with a stem rotatively mounted in suitable bearings; of a rock-lever fixed upon, and projecting from, such stem provided 011 its oscillatory end with locking stops; an air-engine having a reciprocatory projecting piston-rod; a link pivotally connected at one end with the projecting end of the piston-rod; a loose pivotal connection between the link and rock-lever intermediately of their ends, respectively,

whereby, when the air-engine is energized by the admission of compressed air, the rocklever is oscillated to change the interlock able members from an unlocked to a locked position, and when the compressed air is cut off from the engine, the rock-lever oscillates toward, and engages with, the detent, and

the piston-rod and link drop by gravity until the stop on the link engages with the stop on the oscillatory end of the rock-lever and locks the link, rock-lever and detent, each in' an immovably fixed position until the air-engine is again energized; an outwardly projecting handle on the oscillatory detent accessible exteriorly of the car, whereby the detent may be thrown out of the path of the rock-lever while the airengine is energized and before the rock-lever has fallen into locking engagement with the detent.

9. In a lock of the class described, the combination with interlockable members accessible exteriorly of the car, one of such members being provided with a stem rotatively mounted in suitable bearings; of a rock-lever fixed upon, and projecting from, such stem provided on its oscillatory end with locking stops; an air-engine having a reciprocatory projecting piston-rod; a link pivotally connected at one end with the projecting end of the piston-rod; a loose pivotal connection between the link and rock-lever intermediately of their ends, respectively; an oscillatory detent normally located in the path of the rocklever; means whereby the rock-lever can be operated by hand through the exteriorly located portion of the interlocking member connected therewith, consisting of a supporting stop located on the piston-rod link; a link-stop pivoted at its upper end upon the rock-lever intermediately of its ends, and provided at its lower end with asupporting stop adapted to engage the 'stop on the piston-rod link, and

support such link in fixed relation to the rock-lever; a stationary trip for disengaging the link-stop from the stop on the piston-rod link when the rock-lever has been oscillated upward by hand to a position adapted to engage with the detent, whereupon the piston-rod and piston-rod link fall by gravity until the stop on the upper end of such link engages with the stop on the oscillatory end of the rock-lever to lock the link, rock-lever and detent, each in a position to maintain the interlocking members in locked position.

In testimony whereof, I have hereunto set my hand this 29th day of January, 1909.

LELAND WVADSVVORTH. Witnesses:

FRANK C. CURTIS, LILLIAN G. KENNEDY. 

